A+C: Jan Mercl (individual CLA)

Generated by addca.

R=gobot
CC=golang-dev
https://codereview.appspot.com/13189043
doc: correct a minor go_mem.html mistake

Fixes Issue 6227

R=golang-dev, bradfitz
CC=golang-dev
https://codereview.appspot.com/13183043

Committer: Brad Fitzpatrick <bradfitz@golang.org>